From: Jesper Juhl <jj@chaosbits.net>
Date: Fri, 12 Aug 2011 22:51:40 +0000 (+0200)
Subject: drivers/staging/rtl8187se: Don't pass huge struct by value
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=74d556bc63fbf3481100be5c8de2637972cbdaeb;p=GitHub%2FLineageOS%2FG12%2Fandroid_kernel_amlogic_linux-4.9.git

drivers/staging/rtl8187se: Don't pass huge struct by value

struct ieee80211_network is fairly large (more than half a kilobyte),
so let's pass a pointer instead of passing the entire structure by
value when ieee80211_is_54g() and ieee80211_is_shortslot() need to
look at a few members.
Also remove parentheses around the values being returned from those
two functions - 'return' is not a function.

Signed-off-by: Jesper Juhl <jj@chaosbits.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
---

diff --git a/drivers/staging/rtl8187se/ieee80211/ieee80211.h b/drivers/staging/rtl8187se/ieee80211/ieee80211.h
index e79a7e212979..40dd715d9df7 100644
--- a/drivers/staging/rtl8187se/ieee80211/ieee80211.h
+++ b/drivers/staging/rtl8187se/ieee80211/ieee80211.h
@@ -1339,8 +1339,8 @@ int ieee80211_wx_set_mlme(struct ieee80211_device *ieee,
 
 int ieee80211_wx_set_gen_ie(struct ieee80211_device *ieee, u8 *ie, size_t len);
 /* ieee80211_softmac.c */
-extern short ieee80211_is_54g(struct ieee80211_network net);
-extern short ieee80211_is_shortslot(struct ieee80211_network net);
+extern short ieee80211_is_54g(const struct ieee80211_network *net);
+extern short ieee80211_is_shortslot(const struct ieee80211_network *net);
 extern int ieee80211_rx_frame_softmac(struct ieee80211_device *ieee, struct sk_buff *skb,
 			struct ieee80211_rx_stats *rx_stats, u16 type,
 			u16 stype);
diff --git a/drivers/staging/rtl8187se/ieee80211/ieee80211_softmac.c b/drivers/staging/rtl8187se/ieee80211/ieee80211_softmac.c
index 38e67f0bf624..26bacb96d247 100644
--- a/drivers/staging/rtl8187se/ieee80211/ieee80211_softmac.c
+++ b/drivers/staging/rtl8187se/ieee80211/ieee80211_softmac.c
@@ -32,14 +32,14 @@ u8 rsn_authen_cipher_suite[16][4] = {
 	{0x00,0x0F,0xAC,0x05}, //WEP-104
 };
 
-short ieee80211_is_54g(struct ieee80211_network net)
+short ieee80211_is_54g(const struct ieee80211_network *net)
 {
-	return ((net.rates_ex_len > 0) || (net.rates_len > 4));
+	return (net->rates_ex_len > 0) || (net->rates_len > 4);
 }
 
-short ieee80211_is_shortslot(struct ieee80211_network net)
+short ieee80211_is_shortslot(const struct ieee80211_network *net)
 {
-	return (net.capability & WLAN_CAPABILITY_SHORT_SLOT);
+	return net->capability & WLAN_CAPABILITY_SHORT_SLOT;
 }
 
 /* returns the total length needed for pleacing the RATE MFIE
@@ -789,7 +789,7 @@ static struct sk_buff* ieee80211_probe_resp(struct ieee80211_device *ieee, u8 *d
 	else
 		atim_len = 0;
 
-	if(ieee80211_is_54g(ieee->current_network))
+	if(ieee80211_is_54g(&ieee->current_network))
 		erp_len = 3;
 	else
 		erp_len = 0;
@@ -1258,7 +1258,7 @@ void ieee80211_associate_complete_wq(struct work_struct *work)
 	struct ieee80211_device *ieee = container_of(work, struct ieee80211_device, associate_complete_wq);
 
 	printk(KERN_INFO "Associated successfully\n");
-	if(ieee80211_is_54g(ieee->current_network) &&
+	if(ieee80211_is_54g(&ieee->current_network) &&
 		(ieee->modulation & IEEE80211_OFDM_MODULATION)){
 
 		ieee->rate = 540;
@@ -1379,7 +1379,7 @@ inline void ieee80211_softmac_new_net(struct ieee80211_device *ieee, struct ieee
 				ieee->beinretry = false;
 				queue_work(ieee->wq, &ieee->associate_procedure_wq);
 			}else{
-				if(ieee80211_is_54g(ieee->current_network) &&
+				if(ieee80211_is_54g(&ieee->current_network) &&
 						(ieee->modulation & IEEE80211_OFDM_MODULATION)){
 					ieee->rate = 540;
 					printk(KERN_INFO"Using G rates\n");
diff --git a/drivers/staging/rtl8187se/r8180_rtl8225z2.c b/drivers/staging/rtl8187se/r8180_rtl8225z2.c
index 3f09f76080af..ee5b867fd0d4 100644
--- a/drivers/staging/rtl8187se/r8180_rtl8225z2.c
+++ b/drivers/staging/rtl8187se/r8180_rtl8225z2.c
@@ -596,7 +596,7 @@ static void rtl8225_rf_set_chan(struct net_device *dev, short ch)
 {
 	struct r8180_priv *priv = ieee80211_priv(dev);
 	short gset = (priv->ieee80211->state == IEEE80211_LINKED &&
-		ieee80211_is_54g(priv->ieee80211->current_network)) ||
+		ieee80211_is_54g(&priv->ieee80211->current_network)) ||
 		priv->ieee80211->iw_mode == IW_MODE_MONITOR;
 
 	rtl8225_SetTXPowerLevel(dev, ch);
@@ -615,7 +615,7 @@ static void rtl8225_rf_set_chan(struct net_device *dev, short ch)
 	}
 
 	if (priv->ieee80211->state == IEEE80211_LINKED &&
-	    ieee80211_is_shortslot(priv->ieee80211->current_network))
+	    ieee80211_is_shortslot(&priv->ieee80211->current_network))
 		write_nic_byte(dev, SLOT, 0x9);
 	else
 		write_nic_byte(dev, SLOT, 0x14);